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DMA: Rework dw_dmac suspend_late()/resume_early()

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This patch reworks platform driver power management code
for dw_dmac from legacy late/early callbacks to dev_pm_ops.

The callbacks are converted for CONFIG_SUSPEND like this:
  suspend_late() -> suspend_noirq()
  resume_early() -> resume_noirq()

Signed-off-by: Magnus Damm <damm@igel.co.jp>
Acked-by: Greg Kroah-Hartman <gregkh@suse.de>
Acked-by: Pavel Machek <pavel@ucw.cz>
Signed-off-by: Rafael J. Wysocki <rjw@sisk.pl>
This commit is contained in:
Magnus Damm 2009-07-08 13:22:18 +02:00 committed by Rafael J. Wysocki
parent 79ee031ff6
commit 4a256b5fc0
1 changed files with 10 additions and 5 deletions
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15
drivers/dma/dw_dmac.c
View file

@ -1399,8 +1399,9 @@ static void dw_shutdown(struct platform_device *pdev)
clk_disable(dw->clk);
}
static int dw_suspend_late(struct platform_device *pdev, pm_message_t mesg)
static int dw_suspend_noirq(struct device *dev)
{
struct platform_device *pdev = to_platform_device(dev);
struct dw_dma *dw = platform_get_drvdata(pdev);
dw_dma_off(platform_get_drvdata(pdev));
@ -1408,23 +1409,27 @@ static int dw_suspend_late(struct platform_device *pdev, pm_message_t mesg)
return 0;
}
static int dw_resume_early(struct platform_device *pdev)
static int dw_resume_noirq(struct device *dev)
{
struct platform_device *pdev = to_platform_device(dev);
struct dw_dma *dw = platform_get_drvdata(pdev);
clk_enable(dw->clk);
dma_writel(dw, CFG, DW_CFG_DMA_EN);
return 0;
}
static struct dev_pm_ops dw_dev_pm_ops = {
.suspend_noirq = dw_suspend_noirq,
.resume_noirq = dw_resume_noirq,
};
static struct platform_driver dw_driver = {
.remove = __exit_p(dw_remove),
.shutdown = dw_shutdown,
.suspend_late = dw_suspend_late,
.resume_early = dw_resume_early,
.driver = {
.name = "dw_dmac",
.pm = &dw_dev_pm_ops,
},
};